Mineral Structure Analysis and Crystal Chemistry

Structural arrangement of the beryllium phosphate zeolite Pahasapaite.

For reprints email John Rakovan at Rakovajf@muohio.edu

Luo*, Y., Rakovan, J., Elzinga, E., Pan, Y., Lupulescu, M.V., and Hughes, J. (2011). Crystal chemistry of Th in fluorapatite. American Mineralogist. 96:23-33.

Borkiewicz*, O., Rakovan, J., and Cahill, C. (2010) Time resolved in-situ studies of apatite formation pathways in aqueous solutions. American Mineralogist, 95:1224-1236.

Hughes, J.M., Rakovan, J, Ertl, A., Rossman, G.R., Baksheev, I., Bernhardt, H.J. (2011) Dissymmetrization in tourmaline: The atomic arrangement of optically sectoral-zoned triclinic Ni-bearing Mg-rich tourmaline. Canadian Mineralogist, 49:451-462.

Lupulescu, M.V., Rakovan, J., Robinson, and Hughes, J. (2009) Fluoropotassichastingsite from the Greenwood Mine, Orange County, New York: A new end-member calcic amphiboles. Canadian Mineralogist. 47:909-916.

Deshpande, R., Jiang, L., Schmidt*, G., Rakovan, J., Wang, X., Wheeler, K. and Wang, H. (2009) A concise approach to the synthesis of oppdibenzoporphyrins through the Heck reaction. Organic Letters.

Rakovan, J., Gasbarro*, N., Nakotte, H., Kothapalli, K. and Vogel, S. C. (2009) Characterization of Gold Crystallinity by Diffraction Methods. Rocks & Minerals, 84:54-61.

Luo*, Y., Rakovan, J., Hughes, J. Pan, Y., (2009). Site preference of U and Th in Cl, F, Sr apatites . American Mineralogist, 94: 345-351.

Hughes, J.M., Wise, W.S., Gunter, M.E., Morton, J.P. and Rakovan, J. (2008) Lasalite, Na2Mg2(V10O28) . 20H2O, a new decavanadate mineral from the Vanadium Queen Mine, la sal District, Utah: mineral description, atomic arrangement, and relationship to the pascoite group of minerals. Canadian Mineralogist, 46:1365-1372

Hughes, J.M., Jolliff, B. L., and Rakovan, J. (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite. American Mineralogist, 93:1300-1305.

Lupulescu, M.V., Rakovan, J., Robinson, and Hughes, J. (2005) Fluoropargasite, a new member of the group 2, calcic amphiboles, from Edenville, Orange County, New York. Canadian Mineralogist. 43, 1423-1428.

Chakhmouradian, A.R. Hughes, J.M. and Rakovan, J. (2005) Fluorcaphite, A Second Occurrence and detailed Structural Analysis: simultaneous accommodation of Ca, Sr, Na, and LREE in the apatite atomic arrangement. Canadian Mineralogist. 43, 735-746.

Losey, A., Rakovan, J., Hughes, J.M., Francis, C.A. and Dyar, M.D. (2004) Structural Variation in the lithiophilite-triphylite series and other olivine-group structures. Canadian Mineralogist. 42, 1105-1115.

Hughes, J.M., Ertl, A., Bernhardt H.J., Rossman, G.R. and Rakovan J. (2004) Mn-rich fluorapatite from Austria: Crystal structure, chemical analysis, and spectroscopic investigations. American Mineralogist. 89. 629-632.

Meng, Y., Newville, M., Sutton, S., Rakovan, J, and Mao, H.K. (2003) Fe and Ni impurities in synthetic diamond. American Mineralogist. 88, 1555-1559.

Hughes, J.M, Rakovan, J. and Bracco, R., Gunter, M. (2003) The atomic arrangement of the ganophyllite-group modulated layer silicates as determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 Å ganophyllite-group superstructure revealed. American Mineralogist. 88, 1324-1330.

Rakovan, J., Reeder, R.J., Elzinga, E.J., Cherniak, D. Tait, C.D. and Morris, D.E. (2002) Characterization of U(VI) in the apatite structure by X-ray absorption spectroscopy. Environmental Science and Technology. 36, 3114-3117.

Hughes, J.M., Schindler, M., Rakovan, J., and Cureton, F. (2002) The crystal structure of hummerite, KMg(V5O14) · 8H2O: Bonding between the [V10O28]6- structural unit and the {K2Mg2(H2O)16}6+ interstitial complex. Canadian Mineralogist. 40, 1429-1435.

Hughes, J.M., Cureton, F., Marty, J., Gault, R., Gunter, M.E., Campana, C.F., Sommer, A., Rakovan, J. and Brueseke, M.E. (2002) Dickthomssenite, Mg(V2O6)7H2O, a new mineral from the Firefly-Pigmay Mine, Utah: Descriptive mineralogy and crystal structure. Canadian Mineralogist. 39, 1691-1700.

Rakovan, J.F. and Hughes, J.M. (2000) Strontium in the apatite structure: structure and chemistry of belovite-(Ce) and Sr-rich apatite. Canadian Mineralogist, 38, 839-845.

Parise, J.B., Corbin, D.R., Abrams, L., Northrup, P., Rakovan, J., Nenoff, T.M., and Stucky, G.D.
(1994) Structural relationships between some BePO-, BeAsO-, and AlSiO-RHO frameworks. Zeolites, 14, 25- 34.

Rakovan, J (1992) Rietveld Refinement of a IIb-2 clinochlore. M.S. thesis, UI-Chicago.

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